20201225 has 12 divisors (see below), whose sum is σ = 27327120. Its totient is φ = 14691600.

The previous prime is 20201191. The next prime is 20201227. The reversal of 20201225 is 52210202.

It is not a de Polignac number, because 20201225 - 2¹⁸ = 19939081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20201227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36455 + ... + 37004.

It is an arithmetic number, because the mean of its divisors is an integer number (2277260).

Almost surely, 2^20201225 is an apocalyptic number.

20201225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20201225 is a deficient number, since it is larger than the sum of its proper divisors (7125895).

20201225 is a wasteful number, since it uses less digits than its factorization.

20201225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73480 (or 73475 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20201225 is about 4494.5772882441. The cubic root of 20201225 is about 272.3490733405.

Adding to 20201225 its reverse (52210202), we get a palindrome (72411427).

The spelling of 20201225 in words is "twenty million, two hundred one thousand, two hundred twenty-five".